Categories: Cakes, Chocolate 
      Yield: 12 servings 
  
      1 pk Fudge Marble Cake Mix; (            2 tb Vegetable Oil; Divided 
           -18.25 to 19.75 Oz)                      Water 
      3 lg Eggs                                1 c  Peanut Butter Chips; Reese's 
    1/3 c  Vegetable Oil: PLUS             
  
  Preheat the oven to 350 degrees F.  Grease and flour two 8- or 9-inch round 
  baking pans.  Prepare the cake batters according to the package directions 
  using the eggs, 1/3 cup of oil and water. In the top of a double boiler, 
  over hot NOT boiling water, melt the peanut butter chips with the remaining 
  2 Tb of oil, stirring constantly, OR in a small microwave-safe bowl, place 
  the chips and oil, then microwave on HIGH (100%) for 45 seconds, stirring 
  if necessary.  If necessary, microwave on HIGH (100%) for an additional 15 
  seconds or until melted and smooth when stirred. Gradually add the peanut 
  butter to the vanilla batter, blending well. Pour the peanut butter batter 
  into the prepared pans. Randomly place spoonfuls of the chocolate batter on 
  top and swirl in as directed on the cake package. Bake for 30 to 40 minutes 
  or until a wooden pick inserted in the center comes out clean. Cool 15 
  minutes, in the pans, on a wire rack then remove from the pans and cool 
  completely.  Frost as desired.